CN202706022U - Recycled post-tensioned prestressing anchor cable pile - Google Patents
Recycled post-tensioned prestressing anchor cable pile Download PDFInfo
- Publication number
- CN202706022U CN202706022U CN 201220403490 CN201220403490U CN202706022U CN 202706022 U CN202706022 U CN 202706022U CN 201220403490 CN201220403490 CN 201220403490 CN 201220403490 U CN201220403490 U CN 201220403490U CN 202706022 U CN202706022 U CN 202706022U
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- anchor cable
- drill bit
- pile
- stressed
- drilling rod
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Abstract
The utility model discloses a recycled post-tensioned prestressing anchor cable pile, which comprises a cement composite soil pile body and an anchor cable embedding into the pile body deeply, wherein a drill bit is connected to one end of the anchor cable, which is embedded into the pile body deeply. According to the recycled post-tensioned prestressing anchor cable pile, a common recycled prestressing anchor pile is improved, so that two steps of anchor cable placement and slip casting are combined into one step, the construction procedure is saved, the working efficiency is improved, and a structure of the anchor cable pile is simplified; and since cement slurry is mixed and stirred with a soil body, the material consumption is reduced while the construction quality is ensured.
Description
Technical field
The utility model relates to the bracing of foundation pit technical field in the building operations, relates in particular to a kind of recyclable post-stressed anchored pile in being applicable to temporarily go along with sb. to guard him.
Background technology
Present stage, in highway, railway, urban architecture, building deep foundation, underground concealed engineering, geotechnical engineering slope treatment are generally adopted the prestressed anchor reinforcement technology.
Yet the development along with society, the urban architecture land used is more and more nervous, foundation depth also strengthens thereupon, it is more and more serious that anchor cable intrusion building line affects the construction of next architectural planning land used, go along with sb. to guard him temporarily simultaneously that the disposable input of facility stream line is not recyclable again to have caused the great wasting of resources, therefore a large amount of researchers are at Foreign Experience, and experimental study has gone out recoverable prestressed anchor cable.Existing recoverable prestressed anchored pile all is to adopt step-by-step construction, and the steps such as pore-forming, placement anchor cable, grouting, anchor cable locking, recovery anchor cable have the shortcomings such as complicated operation, long construction period, simultaneously complex structure, waste of material.
Summary of the invention
The utility model provides a kind of recyclable post-stressed anchored pile, has the advantages such as quick construction, convenience, has solved the shortcomings such as common recoverable prestressed anchor cable structure complexity, waste of material.
A kind of recyclable post-stressed anchored pile comprises cementitious composite soil pile body and the anchor cable that gos deep into pile body, and the end that anchor cable gos deep into pile body is connected with drill bit.
Anchor cable one end is connected with drill bit by safe pin, and the other end is connected with the counter-force that tensioning anchor cable and the native pile body of cementitious composite termination offset and buckles, and wherein the native pile body of cementitious composite also comprises other space enclosing structure pile bodies, and the counter-force button also is referred to as anchor head; Described safe pin is connected with the drill bit knot that can be undone by a pull, when drill bit rotated, safe pin can guarantee that anchor cable do not follow drill bit and rotate, and safe pin also is a kind of release unit simultaneously, the threshold of its breaking releasing can guarantee that a suitable scope anchor cable comes off smoothly.
Drill bit is connected with the drilling rod knot that can be undone by a pull, gos deep into the soil body by the rig rotation.
The drill bit bottom surface is provided with draw-in groove; Drilling rod is stock shape, and two ends have the through hole that interconnects, and the cross section is annular, an end and draw-in groove engagement connection; Respectively have several openings gunniting hole and injected hole outwardly on the outer wall of two ends of drill, gunniting hole is communicated with injected hole.The passage that is communicated with does not link to each other with through hole.
Before the construction, drill bit and drilling rod engagement connection; In the construction, drilling rod need to head on bit and advance; When moving back bar, only need drilling rod is retreated, drill bit is separated with drilling rod.
Anchor cable is the steel strand cable, also can be nonmetal high-strength carbon fiber drag-line.
The construction sequence of the recyclable post-stressed anchored pile of this kind is as follows:
1), assembling and location
Described anchor cable passes the through hole on the drilling rod, is connected with the drill bit knot that can be undone by a pull by safe pin, and anchor cable does not rotate when guaranteeing the drill bit rotation; Drilling rod is connected with the drill bit knot that can be undone by a pull, guarantees that drilling rod can separate with drill bit; By designing requirement with certain angle, the position that drill bit need to be driven piles;
2), slip casting and move back bar
Rig rotarily drives drill bit by drilling rod and gos deep into the soil body, in the process of rotation, and injected water mud from the injected hole of drilling rod, cement paste sprays from gunniting hole, mixes with the soil body, forms cementitious composite soil pile body; After drill bit goed deep into desired depth, drilling rod separated with drill bit, and drilling rod withdraws from pile body while reversing, and drill bit and anchor cable are then stayed in the pile body.
3), stretching and locking
When treating that cementitious composite soil condenses into one with anchor cable, anchor cable is carried out stretch-draw, the pulling force of stretch-draw is less than the threshold of safe pin fracture; After stretching force reaches designing requirement, decide anchor cable by the counter-force padlock, prevent the anchor cable retraction;
4), reclaim
After going along with sb. to guard him engineering and finishing mission, anchor cable is carried out stretch-draw reclaim, the stretch-draw pulling force is greater than the threshold of safe pin fracture and the frictional resistance between anchor cable top layer and the cementitious composite soil, and anchor cable breaks away from safe pin, and it is rear reusable to extract recovery out.
Drilling rod is connected with the drill bit knot that can be undone by a pull, except engagement connection, can also be to be threaded, and rig is according to a direction rotation during work, and when moving back bar, drilling rod separates with drill bit by the rightabout rotation, withdraws from pile body along anchor cable; When withdrawing from pile body, drilling rod continues the ejection cement paste while counter-rotating, fully mix cement slurry and the soil body, the intensity of assurance cementitious composite soil pile body.
The utility model improves general recoverable prestressed anchored pile, make placement anchor cable, two steps of slip casting merge into a step, saved working procedure, improved operating efficiency, simplified the structure of anchored pile, cement paste and soil body mix and blend when guaranteeing construction quality, have reduced material consumption.
Description of drawings
Fig. 1 is the structural representation when recyclable post-stressed anchored pile is constructed in the utility model implementation column 1;
Fig. 2 is the structural representation of drill bit in the utility model implementation column 1;
Fig. 3 be among Fig. 2 A to structural representation;
Fig. 4 is the structural representation of recyclable post-stressed anchored pile in the utility model implementation column 1.
The specific embodiment
Embodiment 1
Shown in Fig. 1-4, a kind of recyclable post-stressed anchored pile, comprise cementitious composite soil pile body 1 and the anchor cable 2 that gos deep into pile body, anchor cable 2 one ends are connected with the drill bit 4 that gos deep into the soil body by safe pin 3, and the other end is connected with tensioning anchor cable 2 and buckles 5 with the counter-force that cementitious composite soil pile body 1 termination offsets; Safe pin 3 is connected with drill bit 4 knots that can be undone by a pull, guarantee drill bit turn into the time, anchor cable is not followed drill bit and is rotated.
Be provided with draw-in groove 7 with safe pin 3 unidirectional bottom surfaces on the drill bit 4, drilling rod 6 connects an end and draw-in groove 7 engagement connections of drill bit 4, and drilling rod 6 heads on drill bit 4 according to a direction rotation during work, and when moving back bar, drilling rod 6 retreats with drill bit 4 and separates; Certainly the bottom surface of drill bit 4 also can be adopted with drilling rod 6 and is threaded, and drilling rod separates with drill bit 4 by the rightabout rotation if employing is threaded then; After the separation, when drilling rod 6 withdraws from pile body along anchor cable 2, continue the ejection cement paste while counter-rotating, fully mix cement slurry and the soil body, the intensity of assurance cementitious composite soil pile body.
The construction sequence of the recyclable post-stressed anchored pile of this kind is as follows:
1), assembling and location
2), slip casting and move back bar
Rig rotarily drives drill bit 4 by drilling rod 6 and gos deep into the soil body, in the process of rotation, by slurry filling machine injected water mud from the injected hole of drilling rod 6, cement paste is from gunniting hole 9 ejections, mix with the soil body, form cementitious composite soil pile body, through hole protection anchor cable 2 is not corroded by cement paste during slip casting; After drill bit 4 goed deep into desired depth, drilling rod 6 retreated with drill bit 4 and separates, and drilling rod 6 withdraws from pile body while reversing, and drill bit 4 and anchor cable 2 are stayed in the pile body;
3), stretching and locking
When treating that cementitious composite soil condenses into one with anchor cable 2, by electronic puller system anchor cable 2 is applied pulling force, use simultaneously the anchor cable tensiometer that pulling force is measured, the pulling force of stretch-draw is less than the threshold of safe pin 3 fractures; After stretching force reaches designing requirement, by counter-force button 5 locking anchor cables 2, when preventing that anchor cable 2 from retracting, play again the effect of the fixing peripheral soil body, prevent from caving in;
4), reclaim
After anchored pile met designing requirement, sealing off and covering anchorage blocked the outer unnecessary anchor cable 2 of pile body, repeats above step and finishes other anchor cable pile constructions; After going along with sb. to guard him engineering and finishing mission, by electronic puller system anchor cable 2 being carried out stretch-draw reclaims, the stretch-draw pulling force is greater than the threshold of safe pin 3 fractures and the frictional resistance between anchor cable 2 top layers and the cementitious composite soil, and anchor cable 2 breaks away from safe pin 3, and extraction is reusable after reclaiming.
Claims (6)
1. recyclable post-stressed anchored pile comprises cementitious composite soil pile body (1) and gos deep into the anchor cable (2) of pile body that it is characterized in that: the end that described anchor cable (2) gos deep into pile body is connected with drill bit (4).
2. recyclable post-stressed anchored pile according to claim 1, it is characterized in that: described anchor cable (2) one ends are connected with drill bit (4) by safe pin (3), and the other end is connected with tensioning anchor cable (2) and buckles (5) with the counter-force that cementitious composite soil pile body (1) termination offsets; Described safe pin (3) is connected with drill bit (4) knot that can be undone by a pull.
3. recyclable post-stressed anchored pile according to claim 1, it is characterized in that: described drill bit (4) is connected with drilling rod (6) knot that can be undone by a pull, gos deep into the soil body by the rig rotation.
4. recyclable post-stressed anchored pile according to claim 3, it is characterized in that: described drill bit (4) bottom surface is provided with draw-in groove (7); Drilling rod (6) is stock shape, and two ends have the through hole (8) that interconnects, and the cross section is annular, an end and draw-in groove (7) engagement connection; Respectively have several openings gunniting hole (9) and injected hole outwardly on the outer wall at drilling rod (6) two ends, gunniting hole (9) is communicated with injected hole.
5. recyclable post-stressed anchored pile according to claim 1, it is characterized in that: described anchor cable (2) is the steel strand cable.
6. recyclable post-stressed anchored pile according to claim 1, it is characterized in that: described anchor cable (2) is nonmetal high-strength carbon fiber drag-line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220403490 CN202706022U (en) | 2012-08-13 | 2012-08-13 | Recycled post-tensioned prestressing anchor cable pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220403490 CN202706022U (en) | 2012-08-13 | 2012-08-13 | Recycled post-tensioned prestressing anchor cable pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202706022U true CN202706022U (en) | 2013-01-30 |
Family
ID=47586340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220403490 Expired - Lifetime CN202706022U (en) | 2012-08-13 | 2012-08-13 | Recycled post-tensioned prestressing anchor cable pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202706022U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776881A (en) * | 2012-08-13 | 2012-11-14 | 杭州南联地基基础工程有限公司 | Recyclable post-tensioned prestressing anchor cable pile and construction method thereof |
| CN107653835A (en) * | 2017-09-05 | 2018-02-02 | 华北水利水电大学 | The dot matrix screw anchor flexibility conveyer of crevasse closure |
| CN107675674A (en) * | 2017-09-05 | 2018-02-09 | 华北水利水电大学 | The flexible earth anchor gabion positioner of crevasse quick blocking |
-
2012
- 2012-08-13 CN CN 201220403490 patent/CN202706022U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776881A (en) * | 2012-08-13 | 2012-11-14 | 杭州南联地基基础工程有限公司 | Recyclable post-tensioned prestressing anchor cable pile and construction method thereof |
| CN102776881B (en) * | 2012-08-13 | 2015-02-25 | 杭州南联地基基础工程有限公司 | Recyclable post-tensioned prestressing anchor cable pile and construction method thereof |
| CN107653835A (en) * | 2017-09-05 | 2018-02-02 | 华北水利水电大学 | The dot matrix screw anchor flexibility conveyer of crevasse closure |
| CN107675674A (en) * | 2017-09-05 | 2018-02-09 | 华北水利水电大学 | The flexible earth anchor gabion positioner of crevasse quick blocking |
| CN107653835B (en) * | 2017-09-05 | 2019-09-06 | 华北水利水电大学 | The dot matrix screw anchor flexibility transmission device that crevasse blocks |
| CN107675674B (en) * | 2017-09-05 | 2019-10-29 | 华北水利水电大学 | The flexible earth anchor gabion positioning device of crevasse quick blocking |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |
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| CX01 | Expiry of patent term |